import Vue from 'vue'
import Router from 'vue-router'
import Login from '../components/Login.vue'
import Home from '../components/Home.vue'
import WelCome from '../components/WelCome.vue'
import Users from '../components/user/users.vue'
import Rights from '../components/power/Rights.vue'
import Roles from '../components/power/Roles.vue'
import Cate from '../components/goods/Cate.vue'
import Params from '../components/goods/Params.vue'
import GoodsList from '../components/goods/GoodsList.vue'
import Add from '../components/goods/Add.vue'
import Order from '../components/order/Orders.vue'
import Report from '../components/report/Report.vue'

Vue.use(Router)

const router = new Router({
  routes: [
    {
      path: '/', redirect: '/login'
    },
    {
      path: '/login', component: Login
    },
    { // 路由的重定向
      path: '/home',
      component: Home,
      redirect: '/welcome',
      children: [
        { path: '/WelCome', component: WelCome },
        { path: '/users', component: Users },
        { path: '/rights', component: Rights },
        { path: '/roles', component: Roles },
        { path: '/categories', component: Cate },
        { path: '/params', component: Params },
        { path: '/goods', component: GoodsList },
        { path: '/goods/add', component: Add },
        { path: '/orders', component: Order },
        { path: '/reports', component: Report }

      ]
    }
  ]
})
// 挂载路由导航守卫
router.beforeEach((to, form, next) => {
  // to 将要访问的路径
  // from 代表从哪一个路径跳转而来
  // next 是一个函数，表示放行
  //    next() 放行 next('/login') 强制跳转

  // 如果路径是login则直接放行
  if (to.path === '/login') {
    return next()
  }
  // 获取token
  const tokenStr = window.sessionStorage.getItem('token')
  // token不存在则跳转到login页面
  if (!tokenStr) return next('/login')
  // 存在则放行
  next()
})

export default router
